Add patch for CVE-2026-15588 which limits the length of lines
read from untrusted clients in GDBusAuth, preventing memory
exhaustion. The patch includes a fix for g_test_bug() API
compatibility with GLib 2.56.x used in RHEL 8.
CVE: CVE-2026-15588
Upstream patches:
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/5240.patch
Resolves: RHEL-219132
This commit was backported by Ymir, a Red Hat Enterprise Linux software maintenance AI agent.
Assisted-by: Ymir
